Belong to. Nangang Science and Technology Park in Hefei High-tech Zone was established in August 2007. It is jointly developed by the state-level Hefei High-tech Industrial Development Zone and Shushan District of Hefei City. The overall planning area is about 20 square kilometers. According to the plan, Nangang area belongs to high-tech zone. Hefei is referred to as Liuhe or Hehe for short, and it was called Luzhou, Luyang and Hehe in ancient times. It is named because both Donghefei River and Nanhefei River originated here.